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Spectral and transport properties of a half-filled Anderson impurity coupled to phase-biased superconducting and metallic leads
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SYSNO ASEP 0547677 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Spectral and transport properties of a half-filled Anderson impurity coupled to phase-biased superconducting and metallic leads Author(s) Zalom, Peter (FZU-D) ORCID
Pokorný, Vladislav (FZU-D) RID, ORCID
Novotný, T. (CZ)Number of authors 3 Article number 035419 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 103, č. 3 (2021)Number of pages 16 s. Language eng - English Country US - United States Keywords superconductivity ; quantum dot ; numerical renormalization group ; Josephson junction Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects LTC19045 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA19-13525S GA ČR - Czech Science Foundation (CSF) Research Infrastructure e-INFRA CZ - 90140 - CESNET, zájmové sdružení právnických osob Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000609259800003 EID SCOPUS 85100273189 DOI 10.1103/PhysRevB.103.035419 Annotation We derive and apply a general scheme for mapping a setup consisting of a half-filled single-level quantum dot coupled to one normal metallic and two superconducting phase-biased leads onto an ordinary half-filled single impurity Anderson model with single modified tunneling density of states. The theory allows for the otherwise unfeasible application of the standard numerical renormalization group and enables us to obtain phase-dependent local spectral properties as well as phase-dependent induced pairing and Josephson current. The resulting transport properties match well with the numerically exact continuous-time hybridization-expansion quantum Monte Carlo. For weakly coupled normal electrode, the spectral properties can be interpreted in terms of normal-electrode-broadened Andreev bound states with phase-dependent position analogous to the superconducting Anderson model, which coexist in the pi-like phase with a Kondo peak whose phase-dependent Kondo temperature is extracted. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1103/PhysRevB.103.035419
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